Heater for automobiles



Nov. 29, 1927. 1 1,651,029

' J. W. KELCH ET AL HEATER FOR AUTOMOBILES Filed A112. 11, 1925 INVENTORS Ania M/fEAa/y fl/VE6 7. i50/V0 9 y Patented Nov. 29, 1927.

UNITED STATES A 1,651,029 PATENT OFFICE.

JAMES W. KELCH AND JAMES J. SUNDAY, OF DETROIT, MICHIGAN, ASSIGNORS, BY DIRECT AND MESNE ASSIGNMENTS, T KELCH VENTILATING HEATER COMPANY,

A CORPORATION OF MICHIGAN.

HEATER FOB AUTOMOBILES.

Application filed August 11, 1925. Serial No. 49,528.

This invention relates generally to heating apparatus for motor vehicles and consists of certain novel features of construction, combinations and arrangements of parts as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawing:

Figure 1 is a fragmentary side elevation of a vehicle with a heater embodying my invention attached thereto.

' Figure 2 is a side elevation of the heater with parts broken away.

Figure 3 is a cross sectional view taken on the line 33 of Figure 2.

Referring now to the drawing, the numeral 1 designates a motor vehicle having an engine exhaust conduit 2 to which the heater 3' embodying our invention is preferably attached. As shown, this heater is provided with a tubular outer shell or casing 4 that is closed at its opposite ends by flanged substantially funnel shaped heads 5 and 6 .respectively.

The flanges 7 and8 respectively of these heads may be secured by any suitable means to the shell 4, while the tubular portions 9 and 10 respectively of the heads are preferabl clamped upon the adjacent. portions 11 an 12 respectively of the engine exhaust conduit 2.

For conducting the exhaust gases through the shell 4 from the head 5 to the head 6, we tprovide the shell 4 with a core which 'pre erably com rises a single tube 13 that extends longitu 'nally of the shell 4 between the heads 5 and 6 respectively. As shown,

this tube 13 is corrugated longitudinally and is provided at its 0p heads 14 and 15 respectively that are substantially equalin diameter to the diameter of the flanges 7 and 8 respectively. As

shownin. Figure 3, the head 14 has a central opening 14" conforming in shape to and registering with the open forward end of the tu 13. Any suitable means may be em- 46 ployed for. securin the heads 14 and 15 respectivel to the anges of the heads 5 and 6 and shel 4. Thus with this construction the exhaust gases from the engine will pass from the conduit ortion 11, through the head 5, tube 13 an thence out through the head 6 to the exhaust conduit portion 12.

' With devices of this kind, it is desirable of course to obtain the maximum heat from the exhaust gases passing through the shell.

site ends with the Heretofore this has been accomplishedby various means such as providing the shell with baflles, deflectors and the like, which .caused the exhaust gases from the engine to engine causes the latter to become overheated with a resultant loss of power and ifthe pressure is sufliciently great,'it is apt to cause the heater to explode. With the present construction, this difficulty has been entirely overcome by providingthe forward header 14 with spaced substantially V-shaped webs 16 which project rearwardly from the edges of the opening 14 between the corrugations 13" of the tube 13 and are rigidly secured thereto for directing the exhaust gases from the head 5 into the tube 13, the forward edges of the said tube between the corrugations being cut away to conform to the adjacent edges of the inclined inwardly ex-' tending webs 16 of the header. Inasmuch as these webs are disposed directly in rear of the tubular portion 9 of the forward head 5, it will be readily a parent that the gases from the engine will e directedcentrally within the tube 13 which in turn is in alignment with the tubular portions 9 and 10 res ectively of-the heads 5 and 6. Hence the sail terrupted passage through the heater, back pressure on the en 'ne is eliminated, and the passage of gases t rough the heater will be substantially uniform.

Any suitable means may be employed for directing air from the atmosphere to the shell 4 and for conductingthe heated air to the interior of the motor vehicle. As shown, a ipe 20 extends forwardly from the shell 4 adiacent to the forward end thereof and terminates in a flared portion 21 that is preferably located immediately in rear of the usual fan 22 of the en ine. A second ,pi e 23 extends rearwardly' om the shell 4 a jacent to the rear end thereof and connects into .a suitable air register 24 which ma be located at any convenient'place such as m the floor 25 of the vehicle body. Inasmuch as the core or tube 13 is much smaller aust gases will have a free and uninin diameter than the shell 4, an annular air space 26 is provided between the tube 13 and shell 4 in addition to the longitudinal extending passa cs 27 provided between the corrugations o the core 13, hence air from the atmosphere discharged from the pipe 20 Will circulate about the core 13 with1nthe shell 4 without mixing with the exhaust gases from the engine. The corrugations 13' of the core will throw out the maximum heat so that the air within the shell will beheated. thoroughly before passing outwardly into the ipe 23 leading to the floor register.. To faci itate the circulation of air through the shell 4, .we preferably provide a spiral deflector 30 thatfsurrounds the core 13 between the headers 14 and 15 res ectively. Thus this spiral deflector 30 wil direct the air about the core. 13 and at the same time will advance it longitudinally of the shell toward the outlet pipe 93. I

While it is believed that from the foregoing description, the nature and advantages of the invention will be readily apparent, we desire to have it understood that we do not limit ourselves to what is herein shown and described, and that such changes may be resorted to when desired as fall within the scope of what is claimed.

.ing longitudinally of said shell and adapted to receive exhaust gases from the vehicle motor, and a head for saidtube secured to said shell and havingan opening therein conforming in shape to and in alignment with the cross'sectional area of'said tube, said head consisting of a diskprovided with inwardly and rearwardly projecting substantially V-shaped webs defining the contour of the aforesaid opening; the forward edges of said tube abutting the disk and having V- .shaped recesse'sfitting and receiving the ad'- jacent edges of said webs whereby gases from.

the vehiclewill be directed by said webs into the corrugations of said tubes, said tubes forming an inwardly tapered inlet to the corrugated tube. v In -testimony-whereof we aifix our signatures.

JAMES w.- KELCH. JAMES J. SUNDAY. 

